That is a ruched dress, so if anything, she should have double the booty! Like I said, she never had one to begin with; it's just the way she's posed in the last pic that makes it seem like she has a ***. There is some awesome muscle definition going on there courtesy of squats and lunges, but still no booty. Then again, she doesn't need it, still has a wonderful body.
Jenna Von Oy...now that's booty.